Are Photons Like Particles or Waves?
Notes:
These two lists of phenomena exhibited by photons, and of descriptive phrases, words illustrate how particles and waves were thought to be distinctly separate phenomena. Basically, a particle was localized and had discrete physical properties, like mass, while a wave was inherently spread out over many wavelengths of space and could have amplitudes from a continuous range. Waves could superpose and pass through one another, while particles collided and bounced off each other. The physical laws used to describe each were completely different.